Daniel Simmons is a Senior Fellow at the Institute for Energy Research (IER), where he contributes research and analysis on federal and state energy issues, with an emphasis on electricity markets, grid reliability, and energy affordability.
Simmons returns to IER with a distinguished career in public service, energy policy, and legal analysis. From 2017 to 2021, he led the Department of Energy’s Office of Energy Efficiency and Renewable Energy, first as Principal Deputy Assistant Secretary and then as Senate-confirmed Assistant Secretary.
Before joining the Department of Energy, Simmons served as IER’s Vice President of Policy. His earlier career includes work at the Mercatus Center, as professional staff on the House Committee on Resources, and the Competitive Enterprise Institute. Simmons earned his undergraduate degree from Utah State University and his Juris Doctor from the George Mason University School of Law.
Simmons returns to IER with a distinguished career in public service, energy policy, and legal analysis. From 2017 to 2021, he led the Department of Energy’s Office of Energy Efficiency and Renewable Energy, first as Principal Deputy Assistant Secretary and then as Senate-confirmed Assistant Secretary.
Before joining the Department of Energy, Simmons served as IER’s Vice President of Policy. His earlier career includes work at the Mercatus Center, as professional staff on the House Committee on Resources, and the Competitive Enterprise Institute. Simmons earned his undergraduate degree from Utah State University and his Juris Doctor from the George Mason University School of Law.
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